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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Firewalls >> Weak Initial Sequence Number Vulnerability Assessment Details
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Weak Initial Sequence Number |
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checks for ISN Detailed Explanation for this Vulnerability Assessment The remote host seems to generate Initial Sequence Numbers (ISN) in a weak manner which seems to solely depend on the source and dest port of the TCP packets. A possible hacker may exploit this flaw to establish spoofed connections to the remote host. The Raptor Firewall and Novell Netware are known to be vulnerable to this flaw, although other network devices may be vulnerable as well. Solution : If you are using a Raptor Firewall, see http://www.symantec.com/techsupp/bulletin/archive/firewall/082002firewall.html Otherwise, contact your vendor for a patch. Reference : http://online.securityfocus.com/archive/1/285729 Network Security Threat Level: High Networks Security ID: 5387, 8652 Vulnerability Assessment Copyright: This script is Copyright (C) 2002 Renaud Deraison |
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